Math, asked by abhijaynathan2006, 10 months ago

calculate the mean by step deviation method of the scores 20.students in a mathematical test

marks 10-20,20-30,30-40,40-50,50-60

no. of students 2 4 7 6 1

Answers

Answered by mamtabharti2003

1

Answer:

mean=sum of observation/number of observations
mean=10+20+30+40+60+50/5

Step-by-step explanation:

mean=210/5

=42

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